Valve for steam-pump engines.



C. M. E F. B. STONER.

VALVE EOE STEAM PUMP ENGINES.

AYPLIOATION FILED 00T. 26, 1909.

Patented Apr. 15, 1913.

4 SHEETS-SHEET 1.

wilma/.ame

C.AM'. & P. B. STONER.

VALVE FOR STEAM PUMP ENGINES.

APPLOATION FILED 00T. 26, 1909. 1,058,91 9.

4 SHEETS-SHEET s.

' Vw-glam @M/ma COLUMNA FLANOCIAPH Cov'V/AIHINGTQN. D. C.

Patented Apr. 15, 1913.

C. & F. B. STONER.

VALVE FOR STEAM PUMP ENGINES.

Y APPLIGATION FILED 0012s. 1909.

1,058,919. .PatenfeaApr.15,191a.

4 SHEETS-SHEET 4.

s2/vi hmmm DHM-w Y 'amm .UNITED STATES .PATENT GFFIGE:

cYRUs M. s'roNER AND FREDERICK B. STQNEE, 4oF coNNELLs'VILLE PENNSYLVANIA.

VALVE EOE sTEAivI-PUMP ENGINES.

Application filed October 26,

Specication of Letters Patent.

Patented Apr. 15, 1913. 1909. Serial No. 524,608.

To all whom t may concern.' 1

Be it known that we, CYRUs M. SToNEnl and FREDERICK B. STONER, citizens of thef United States, residing at Connellsville, ini the county of Fayette and State of Pennsyl .l Vania, have invented a new and useful Im-g provement in Valves for Steam-Pump En gines, of which the following is a specifica@ tion. f

This invention relates to a valve for engines of steam pumps and the object of theg' invention-is to do away with the auxiliary? valve usually employed upon direct acting, pump engines and also to prevent the en-Q gine running away should the pump run out; of water or through any accident loseits; vacuum. Usually under such circumstances. an engine pump would continue to run at ani abnormal speed until stopped by an attend-f ant or through the breakage of some part of; the engine.

In order to regulate the speed of the pump? and to avoid damage to it by too high a speed it has been common to employ what is known as a cataract, being an extra cylinder placed in advance of the steam chestfy and containing oil in which worked a piston connected to the piston valve of the steam chest, oil being moved through a suitable port, commonly placed in the piston itself, from one side of said piston to thef other, and by its presence acting as a check` and holding down the speed of the pistonjl valve and consequently of the engine itself..y This cataract has usually been an expensive g part of the engine construction and one ofi the essential features of our invention is the,` supplying of simple means for preventing the engine from running away and regulat-; ing its speed.-

With these various objects in view, our invention consists of the novel features of construction, combination and arrangementA of parts hereinafter fully described, pointed out in the claims and shown in the accom` panying drawings, in which,

Figure 1 is an end view of an engine cylinder partly broken away and showing our invention in side elevation.4 Fig. 2 is a longitudinal section through a valve casing and through a hollow piston adapted to work therein. Fig. 3 is a section on the line 3-3i of Fig. 2. Fig. 4 is an irregular vertical longitudinal section through the valve casing, the piston being shown in a different position from that in Fig. 2. Fig. 5 is a sec- .midway its ends. ofa pump engine with our valvel casing applied thereto, andillustrating the manner of each other and through a stufing box and supporting bracket for the stem o-f a piston valve. Fig. 10 is a plan View of a valve.

which for convenience is able'base 8, which is through the said slot 8 between the interior tononthe line 5-5 of Fig. 4. F ig. 6 is a y vertical section through the valve casing, Fig. 7 is a side elevation connecting the valve mechanism to the piston rod of the engine. Figs. 8 and 9 are detail sectional views taken at right angles to In these drawings, 1 represents a steam pump engine and 2 acylindrical valve casing, preferably placed transversely upon the top of the engine cylinder.` This valve casing comprises a suite bolted to the engine( cylinder andthe said base is provided with three parallel transverse slots 4, 5 and 6,

which register with suitable openings in the top of the engine cylinder `and afford communication between said cylinder and the valve casing. A hand operated plug valve 7 which is longitudinally slotted throughout a portion of its length as shown at 8 eX- tends through the slot 5 and when turned so as to bring the slot 8 of the plug into alinement wit-h the slot 5 permits communication of the valve casing and the exhaust of the engine cylinder. But when turned to bring said slot 8 at right angles to the slot 5, the plugv valve 7 will cut off said communication. In an intermediate position, the said plug 7 willregulate the extent of communication between the valve casing and the exhaust of the engine through the slot 5 as illustrated in Fig. 4. Within the valve casing 2 is slidably and rotatably mounted a piston valve 9, which piston is hollow and closed at both ends. The piston 9 is pro-V vided at one end with an operating stem 10 and upon one side is inwardly depressed thus forming a cavity 11 between the side of the piston and the inner wall of the valve casing, and upon what is normally the un- Y derside of said piston valve, said cavity being of suficient length to bridge two of the slots, 4, 5 or 6 at one time as shown in Figs. 2 and 4. Adjacent its ends the piston valve is circumferentially slotted as shown at 12,`

land 13, said slots registering respectively and alternately with the slots 4 and 6, the slot 12 registering with the slot 4 only when the slot 13 is out of alinement with the slot 6, shown in Fig. 2.

It will be noted that when the piston valve is' in such position that the slot 12 registers with the slot 4, the cavity 11 bridges the slots 6 and 7. When the slot 13 is brought into communication with the slot 6, the slots 4 and 5 have communicationthrough the cavity 11. The piston valve is also provided with slots 14, and 15 in circumferential alinement respectively with the slots 12.

that end opposite the stem 10 to a point adjacent the longitudinal center of said pis` ton valve, terminating however short of said central point. The piston valve is also provided with two similar grooves 17 and 18 extending from the front end of the valve, the said grooves being parallel to each other: and upon opposite sides of the longitudinal line upon which the groove 16 is formed,

but it will be understood that the grooves 17 and 18 do not overlap the grooves 16.

The casing 2 is providedwith circumferen? tial slots 19 and 20 with which the slots 14! yand 15 of the piston are adapted to registerl respectively. The slots 19 and 20 open into a steam space 21, which extends about half way around one side and the top of the valve;

casing. This steam space communicates with the grooves 16 and 17 in the piston valve` by means of steam inlets 22 and 22a, respectively. Exhaust. ports 23 and 23a are also adapted to be broughtl into communication yby 4partial rotation of the piston, with said grooves, as will be explained more fully hereafter. Upon the side of the valve casing opposite the enlargement which forms the` steam space 21 is a semi-cylindrical vertical enlargement 24. This is provided with a 'vertical bore 25, the upper end port-ion of which is enlarged to receive a vertically ar-` ranged plug valve 26. This plug valve is provided with a T-shaped bore thereby7 forming a horizontal passage 27 through? the valve and apcommunieating vertical and downwardly open passage 27 a. The horizontal passage 27 communicates at its ends with i the exhaust openings 23 and 23a, which are angled for this purpose, as indicated in Fig. 5 and said exhaust ports being formed in the valve casing upon opposite sides of the vertical enlargement 24. The passage 27a, opens downwardly into the bore 25 and said bore is adapted to communicate with the slo-t 8 through a transverse opening 8a formed in the plug 7. The said plug 7 is provided with a hand operated lever 28, and` the plug 26 is provided with a hand oper- Steam is delivered to the steam space 21 through a supply pipe 30.

In order to impart sliding movement to the valve 9 the stem 10 which works through a suitable stuiiing gland 31 is provided with a squared portion 10a upon which is mounted a handle 32 having a sleve 33 journaled to rotate in the bracket or bearing 34 carried by the gland 31, and to the outer end of said handle 32 is connected a link 35, which is loosely connected to one end of a pivoted arm 36, which in turn is pivotally connected to a cross head 37 of the engine piston 38.

From the above description of the construct-ion, it is believed that the following brief outline of the operation of these parts will be clear.

lVith the piston valve in the position shown in Fig. 4 steam will enter through the inlet 22a and pass along thc groove 16 into the rear end of the valve casing and by expanding therein will cause the piston valve 9 to move forwardly. During such forward movement the piston valve is given a partial rotation by means of the arm 36, the lilik 35 and the valve handle 32. This rotation brings the groove 16 into registry with the exhaust port 23, and at the same time places the groove 17 into communication with the forward steam inlet 22, and steam is therefore admitted to the front end of the valve casing through the groove 17. .This causes the piston to travel back and upon this rearward movement its rotation is reversed and the groove 18 is brought into registry with the exhaust port 23 and at the same time the groove 16 is again caused to register with the inlet port 22a. This operation will therefore continue indeiinitely, the piston valve being given upon each stroke a partial rotation of about one and one-eighth inches.

As the piston valve is hollow, steam from the space 21 will pass into the same through the slots 19 and 20 in the valve casing as the rotation of the piston valve brings t-he bores 14 and 15 into proper alinement with said slots. When the port 15 is in alinement with the slot 20 as shown in Fig. 4 steam will pass from the space 21 directly to the engine through port 13 and the slot 6. Then the piston valve is shifted to bring the part 14 into registry with the slot 19 the port 12 will be brought into communication with the slot 4 and steam will pass to the engine cylinder through said slot. When the ports are in the position shown in Fig. 4 the exhaust is through slot 4, through the cavity 11 formed by the depression in the piston valve and by way of the slot 5 and plug 8. It will therefore be noted that the sliding movement of the piston valve not only connects alternately the ports 4 and 6 with the exhaust passage 5 but also through the combined sliding and rotary movement of the piston valve the steam employed in driving said piston valve back and forth is also exhausted through slot 8 of the plug 7 which forms a common exhaust for both the valve casing and the engine. It will therefore be observed that the control of the exhaust from both the valve casing and from the engine is regulated by the plug valve 7. Furthermore, the exhaust from the valve casing can also be regulated by the valve 26. By means of these two valves the speed of the piston valve 9 is regulated and consequently the speed of the engine and we have found by experience that with the engine run up to three hundred pounds pressure and the suction pipe then pulled out of the water the engine would only run three strokes per minute faster than its normally running speed.

What we claim is:

l. The combination with an engine pump, having steam inlet p-assages and an exhaust passage arranged between the said inlet passages, ofavalve casing arranged transversely upon said pump and communicating with said passages, a hollow piston valve working in said valve easing and pressed inwardly to form a cavity adapted to bridge at the same time the exhaust passage and a steam inlet of the engine, means for admitting steam into opposite ends of said valve casing, means for giving a partial rotation to the valve piston, the valve easing being provided with a valve controlled exhaust passage, a slotted plug valve rotatably mounted to control the exhaust passage of the engine, the exhaust passage of the valve casing oommunicating with the slot of said plug' valve, the piston valve being slotted and longitudinally grooved, as and for the purpose set forth.

2. In combination with a pump engine, a valve easing mounted thereon, a slid'able and rotatable valve Working in said easing, said valve being hollow provided with suitable openings in its sides, and longitudinally grooved upon its exterior the valve casing being provided with ports and slots adapted to register with the grooves and openings in the piston valve, the said piston valve in its sliding movement controlling the admission of steam to and exhaust from the engine, steam for moving said valve passing to and exhausting from the ends of the valve casing through said grooves, the said valve easing being provided with a valve controlled exhaust communicating with the exhaust passage of the engine pump, and means for giving a partial rotation of the piston valve once during each stroke.

.CYRUS M. STONER.

FREDERICK B. STONER. Witnesses:

JOHN WV. PICKETT, CHAS. W. U'rrs.

Gopies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

